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Finding the Fourth Proportional to 274,403.58, 378,631.69 and 172,356.34

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Solution

The fourth proportional to 274,403.58, 378,631.69 and 172,356.34 is: 237,823.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    274,403.58 : 378,631.69 = 172,356.34 : x
  2. Step 2: Convert to fraction form
    274,403.58/378,631.69 = 172,356.34/x
  3. Step 3: Cross multiply
    274,403.58x = 378,631.69 × 172,356.34
  4. Step 4: Simplify right side
    274,403.58x = 65,259,572,113.63
  5. Step 5: Solve for x
    x = 65,259,572,113.63/274,403.58
  6. Step 6: Final answer
    x = 237,823.32

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.